Problems with your serpentine belt? Here are some common causes.
The serpentine belt, also called the drive belt, is a belt on a car engine that works with the idler, tensioner, and pulleys inside the accessory drive belt system. It provides power for the air conditioning, alternator, power steering, and sometimes the cooling system water pump. The serpentine belt is a critical part of this system, that operates whenever the vehicle is running. If this belt isn’t functioning properly, your engine may not run at all.
Serpentine belts started becoming more common during the 1990s, as this one belt replaced a more complicated mult- belt systems on older cars. Older serpentine belts made of Neoprene need to be replaced every few years, while newer models can sometimes last up to ten year or just under 100,00 miles. Most belts won’t last nearly as long, with failure rates spiking after just four years. Technicians can typically measure the wear on these newer belts and then estimate the time for a replacement based on that measurement.